2000 MITSUBISHI MONTERO Service Repair Manual

ENGINE AND EMISSION CONTROL -Auto-cruise Control System17-23
Inspection Procedure 7
Hunting (repeated acceleration and deceleration) occurs
at the set vehicle speed.
Probable cause
The cause is probably a malfunction of vehicle speed sensor or GE actuator (electronic
governor).
In either case, a diagnosis code regarding the diesel fuel system must be confirmed.DMalfunction of the vehicle speed sensor
DMalfunction of the GE actuator (electronic governor)
DMalfunction of the engine-ECU
MUT-II Self-Diag code
Is a diagnosis code regarding the diesel fuel system output?YES
NO
Check trouble symptoms.NGReplace the engine-ECU.
Follow the troubleshooting regarding the diesel fuel system. (Refer
to GROUP 13C.)
Inspection Procedure 8
When the MAIN switch of the auto-cruise control switch is
turned on, the auto-cruise control indicator lamp does not
illuminate. (However, the auto-cruise control in normal.)
Probable cause
There may be a burnt-out bulb or a malfunction of the auto-cruise control indicator
lampcircuit.DBurnt-out bulb
DMalfunction of the harness
DMalfunction of the connector
DMalfunction of the engine-ECU
OK
Auto-cruise control indicatorlamp bulbcheckNG
Replace
NG
Repair
OK
NG
OK
Check trouble symptom.
NG
Check the harness between the J/B and the combination meter,
and repair if necessary.
Check the following connectors:
D-02, E-10, D-110
OK
Check trouble symptom.
NG
Repair
NG
Replace the engine-ECU.NG
Measure at the engine-ECU connector D-110.
DDisconnect the connector and measure at the harness side.
DIgnition switch and auto-cruise control MAIN switch: ON
DVoltage between terminal 22 and earth
OK:System voltage
Measure at the combination meter connector D-01.
DDisconnect the connector and measure at the harness side.
DIgnition switch and MAIN switch: ON
DVoltage between terminal 62 and earth
OK:System voltageCheck the following connector:D-01
NG
Check the harness between the combination meter and the engine-
ECU, and repair if necessary. OK
Check trouble symptom.


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ENGINE AND EMISSION CONTROL -Auto-cruise Control System17-24
Inspection Procedure 9
Auto-cruise control switch input system check
NG
Check the harness between the auto-cruise control switch and
the engine-ECU, and repair if necessary.
OK
NG
Repair
OK
Check trouble symptom. NG
OK
Auto-cruise control switch check (Refer to P.17-29.)NG
Replace
NG OKClock spring check (Refer to GROUP 52B.)
Repair
OK
NG
Repair
NG
OK
Check trouble symptom.
NG
Check the harness between the J/B and the auto-cruise control
switch, and repair if necessary.
Check the following connectors:
D-210, D-31, D-205, D-205-2, D-205-3
OK
Check trouble symptom.
NG
Repair
NG
Replace the engine-ECU.NG
Measure at the engine-ECU connector D-111.
DDisconnect the connector and measure at the harness side.
DIgnition switch and auto-cruise control MAIN switch: ON
DVoltage between terminal 45 and earth
OK:System voltage
Measure at the auto-cruise control switch connector D-205-3.
DDisconnect the connector and measure at the harness side.
DIgnition switch: ON
DVoltage between terminal 1 and earth
OK:System voltage
NG
Check the harness between the auto-cruise control switch and
the engine-ECU, and repair if necessary.
OK
Check trouble symptom.
Check the following connectors:
D-205-3, D-205-2, D-205, E-10, D-111
Measure at the engine-ECU connector D-112.
DDisconnect the connector and measure at the harness side.
DIgnition switch and auto-cruise control MAIN and CANCEL
switch: ON
DVoltage between terminal 61 and earth
OK:System voltageCheck the following connectors:
D-205-3, D-205-2, D-205, E-10, D-112


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ENGINE AND EMISSION CONTROL -Auto-cruise Control System17-25
DATA LIST REFERENCE TABLE
For the data, which is input to the engine-ECU
<6G7-M/T, 4M4>, engine-A/T-ECU <6G7-A/T> andthrottle valve controller <6G7>, the following items
can be read out by using the MUT-II
.
HOW TO READ OUT DATA LIST
1. Connect the MUT-II
to the 16-pin diagnosis
connector.
Caution
Turn off the ignition switch befor connecting
and disconnecting the MUT-II
.2. Turn the ignition switch to “ON” position.
3. Select “auto-cruise control” on the MUT-II
menu, and then read out the data list.
<6G7>
Terminal
No.Check itemCheck conditionsNormal condition
01Auto-cruiseMAINMAIN switch: ONON
control
switchMAIN switch: OFFOFF
02SETMAIN switch:SET switch: ONON
(COAST)ONSET switch: OFFOFF
03RESUMERESUME switch: ONON
(ACCEL)RESUME switch: OFFOFF
04CANCELCANCEL switch: ONON
CANCEL switch: OFFOFF
05Stop lamp switchBrake pedal: DepressedON
(for stop lamp circuit)Brake pedal: ReleasedOFF
06Stop lamp switchBrake pedal: DepressedOFF
(for auto-cruise control
circuit)
Brake pedal: ReleasedON
07Clutch switchClutch pedal: DepressedON
Brake pedal: ReleasedOFF
Inhibitor switchSelector lever: “N“, “P” positionON
Selector lever: Other than “N“, “P” positionOFF
08Accelerator switchAccelerator pedal: ReleasedON
(Idle position switch)Accelerator pedal: DepressedOFF
09Auto-cruise controlAuto-cruise control system: ActivatedON
systemAuto-cruise control system: Not activatedOFF
10Vehicle speed sensorRoad test the vehicleThe speedometer and
the MUT-IIdisplay the
same value.


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ENGINE AND EMISSION CONTROL -Auto-cruise Control System17-26
Terminal
No.Normal condition Check conditions Check item
11Throttle position sensorAccelerator pedal: Fully depressed450 - 800 mV
Accelerator pedal: DepressedThe more deeply the
pedal is depressed, the
higher value the MUT-
IIdisplay
Accelerator pedal: Release4,200 - 4,900 mV
12Accelerator pedalAccelerator pedal: Fully depressed985 - 1,085 mV
position sensorAccelerator pedal: DepressedThe more deeply the
pedal is depressed, the
higher value the MUT-
IIdisplay
Accelerator pedal: Release4,000 mV or more
<4M4>
Terminal
No.Check itemCheck conditionsNormal condition
01Auto-cruiseMAINMAIN switch: ONON
control
switchMAIN switch: OFFOFF
02SETMAIN switch:SET switch: ONON
(COAST)ONSET switch: OFFOFF
03RESUMERESUME switch: ONON
(ACCEL)RESUME switch: OFFOFF
04CANCELCANCEL switch: ONON
CANCEL switch: OFFOFF
05Stop lamp switchBrake pedal: DepressedON
(for stop lamp circuit)Brake pedal: ReleasedOFF
06Stop lamp switchBrake pedal: DepressedOFF
(for auto-cruise control
circuit)
Brake pedal: ReleasedON
07Clutch switchClutch pedal: DepressedON
Brake pedal: ReleasedOFF
Inhibitor switchSelector lever: “N”, “P” positionON
Selector lever: Other than “N”, “P” positionOFF
08Accelerator switchAccelerator pedal: ReleasedON
(Idle position switch)Accelerator pedal: DepressedOFF
09Auto-cruise controlAuto-cruise control system: ActivatedON
systemAuto-cruise control system: Not activatedOFF


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